Can't install tinytex via install_tinytex()

It is possible you have this error because of the space in the username DEEP & AVRA - I think this is breaking the command. It happens also with package installation. Space in username on windows is not a good thing !

I don't know if there anything we can do in tinytex installer. But I will try to look into it. You can open an issue in tinytex repo too linking to this thread ?

Can you try installing using the advanced offline method too ?